Nippers



(No Model.)

G. W. HUBBARD.

NIPPERS.

No.`441,844. Patented Dec. 2, 1890r UNITED STATES PATENT QEEICE.

GEORGE 1V. IIUBBARD, OF YVINDSOR, VERMONT.

NIPPERS.

SPECIFICATION forming part of Letters Patent No. 441,844, dated December 2, 1890.

Application filed August 14, 1890.

To @ZZ whom t may concern:

Be it known that I, GEORGE W. IIUBBARD, a citizen of Windsor, in the county of Windsor and State of Vermont, have invented certain new and useful Improvements in Nippers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

My invention relates to an improvement in nippers, and more particularly to such as are employed for cutting wire, the object of the invention being to so construct the nippers that the pivotal connection of the levers thereof shall permit of powerful leverage and have that stiffness necessary when the outer edges of the cutting-knives are being used, especially in cutting off other than very short lengths of wire.

A further object is to produce improved nippers which shall be substantial in construction, effective in operation, and cheap to manufacture.

A further object is to so construct the nippers that a portion strain on the pivotal connection will be removed therefrom and borne by the knives.

lith these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as hereinafter set forth, and pointed out in thel claims.

In the accompanying` drawings, Figure l is a side elevation of my improved nippers. Fig. 2 is an edge view. Fig. 3 is a sectional View on the line 0c :c of Fig. l. Fig. Il is a detached view of one of the knives.

A A represent the levers of the nippers, which at their point of crossing are preferably flattened, as at a. At the outer ends of the levers A curved flanges b are formed, and at the opposing edges of the flanges b in- Wardly-p'rojectin g flanges D are produced. In this manner recesses are produced in the forward ends of the levers (or head of the nippers) for the reception of the knives or cutters C. The knives or cutters C are curved to conform to the curved form of the flanges l), said knives or cutters terminating at their inner ends at the inner ends of the said [langes Serial No. 361,966. (No model.)

l), and areprovided at points near their inner ends with perforations c, which are adapted to align with perforations, (l in the ilanges b, for the reception of pins or rivets e, by means of which the knives or cutters are securely held in place. The knives are provided on their curved edges with grinding lines or circles d', which, when the knives are in place, align with each other. By this means a gage is produced, so that in grinding the cuttingedges they may be both ground uniformly, and thus insure the accurate meeting and adjustment of the knives when inserted in their place in the recesses inthe forward ends of the levers A. Projecting centrally from the inner curved face of the knives C is a circular flange or web D, having perforations f therein, concentric with the knives or cutters C, for the reception of a pivot-pin g, the perforation f in one web D being made larger than the perforation in the other web and provided with screw-threads for the reception of a screw-threaded portion of the pivot-pin g. In close proximity to the web D of each knife or cutter C a groove h is made for the reception of the web or circular flange D of the other knife or cutter, whereby lateral movement of the parts will be elfectually prevented and the pivot-pin relieved of strain.

By providing the flanges or ribs h, as above described, upon the inner parts of the lower portions of the nippers, great stiffness will be given to the levers where the strain upon them is excessive, and without objectionable bulkiness upon the head of the nippers. The ribs or flanges h also give a solid abutment againstthe back of the cutters, thus relieving the rivets from considerable shearing strain.

Slight changes might be made in the details of construction of my invention without departing from the spirit thereof or limiting its scope. Hence I do not wish to limit myself to the precise details of construction herein set forth; but,

Having fully described my inve11tion,\vhat I claim as new, and desire to secure by Letters Patent, is

l. The combination, with two levers having flanges at their forward ends, of cutters s'ecured to said flanges, flanges project-ing in- IOO wardly from the cutters, and a pin pivotally connecting the flanges on the cutters, substantially as set forth.

2. rlhe combination, with two levers, of curved flanges at the forward ends thereof, curved cutters secured to said fianges, webs or fianges projecting inwardly from the cutters and conforming to the curvature of the inner faces thereof, and a pin pivotally connecting said webs or fianges, substantially as set forth.

3. The combination, with two levers, of fianges at the forward ends thereof, cutters secured to said flanges and having shoulders adapted to bear on said fianges, webs or Han ges projecting inwardly from the cutters, and a pin Vpivotally connecting said webs, substantially as set forth.

4. The combination, with two levers, of fiange's'at the forward ends thereof, flanges at the edges of said first-mentioned flanges, knives secured to the fianges at the forward ends of the levers, concentric webs projecting inwardly from the knives or cutters, and a Ypin, pivotally connecting the webs, substantially as set forth.

5. The combination, with two levers, of flanges at the forward ends thereof, cutters secured to said flanges, webs extending inwardly from said flanges, one of said flanges having a screw-threaded perforation and the other a plain perforation, and a pin passing through said perforations and provided With screw-threads to enter the screw-threads of the screw-threaded perforation, substantially as set forth. y

6. The combination, with two levers, of anges at the forward ends of said levers, critters secured in said flanges, webs or dan ges projecting inwardly from said cutters, each cutter being provided with a recess to receive the free edge of the web on the other cutter, and a pin for pivot-ally connecting said webs together, substantially as set forth.

7. The combination, with two levers, of knives or cutters secured thereto, said Vcutters being provided on their edges with grinding lines or circles, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

GEORGE W. IIUBBARD.

Witnesses:

WM. BATCHELDER, J. F. WILLIAMS. 

